Gasket



NOV. 29, 193.2. c R HUBBARD ET AL 1,889,144

GASKET Filed July 25, 1950 Fig 7.

I Bl Attorneys,

lNVE-NTO R Patented Nov. '29, 1 932 UNITED STATES PATENT OFFICE (mornnnnonnnnn mvn'noisnm 'M.'WA2PLES, F PALMYBA, New YORK, ASSIGNORS To THEGARLOICK PACKING cement, on PALMYRA, NEW YORK, A .oonronnr on on NEW'YORK GASKET A plication nice w es,

This invention relates to an improved pack ing material especiallyadapted forum in :the makingof gaskets. Although ofigeneral application,itis peculiarly '=well fitted \to be :e'm-

= ployed as a :gasket :to seal the joint around the smoke-ibox of :alocomotive engine.

It is an r'object of the invention :to provide a strip (of :gasketmaterial oit' which the packing element :need not :be pierced lby ithetas- 110 tening elements which mnite the parts to *be sealed by the=gaslzset. I

,It is a tunther 'object-toproyide a gasket of the rabouedeseribedcharacter 'eompnis'ing a plurality of sealing elements disposed in :a

mi side-bysitle melationship and :eonnedted by a Web, membrane or layerof :Eabrie, paper or other suitable material, f a thiekness and texture:sueh that :it maybe readily slit, penforated, ior :sep'arated at :anydesired ipoin'ts =29 between the packing elements to provide :tor

the insention of the fastening elements.

In :the accompanying :dnawing illustrating the pnetenned and modifiedforms (of the invention- Eigane 1 represents, :in face wiiew, azpertionof sa IOCQIDOti'MBFSmdkG' bQX withthegilnproved gasket applied, aportion of the coversplate being removed to disclose underlyingstructure. a 0 .Fig. Zisaside view'otthe smokeabox illustt'ated ibyrEig..1. i

Fig. 3 :is 1a sectional view through the joint of the smoke-boxillustrated in Fig. El, drawn to :a danger scale, the :plane of *sectionbeing "35. represented by the line3.-3 ot 1.

Big. 4 .-is .a ;pers peotive' iziew ott :a :short lengthefgaskehmaterial made inzacefordance with [the invention.

Fig. 5 .is :a face View lot .a specimen of the gasket materialillustrated by :Fig. 4, the specimen :being represented as having beenslit along the center to provide 91 0i the Insertioniof atfasteningielement tindicatediin crosssection.

4' .Ilig. --6 is =3, cross+sectional View .oct three 1930. Serial No.470,565,.

strip 22. These @parts may be prepared and secured together :in anyappropriate manner to produce a :sealing element "which, as indicated inFig. 5,, may ibe stiftfthrough ithe oon-' necting strip at any desiredpoint, :as at1'23, to provide for the insertion of a bolt, :screw,orother fastening element 24, thus :making'it unnecessary to perforateor otherwise sent into the strips of packing 20, 21, relied upon assealing elements, and :making 'it possible to provide :the openings for.the fasteningtelem'entsin accordance with ithespacing of the. fasteningdevices :at ithe time when the gasket isfitoibe used.- 7 Y Onesatisfactory manner of building :up and assembling the :various gpa'rts:of the gasket is illustrated by Fig. 6, "in which the packing elements.20, 21 :ane represented as comprisinglbands of suitable material foldedalong their centers, as at 25, to provide in ward ly'dii-redtedisunface'portions 26,;antl having itheir marginal "portions27 turned in so ilSitO :p'rovide'two pairs of Yields-28 tacingeadh other:along the center zone 10f the gasket strip. 7 a

The connecting strip .22 maybe of paper,- gauze, net, or other material-.o.f=sutficient strength to Ihold the two packing elements :20 21 intheir @proper ire'lative ip'ositi ens until'ithe gasket is zput'iin use.It should :be .-.o'f a unateria'l such as :may :be u'eadily slit, iEljSindicated in Fig. '5,:erifotherW1ise perforated or parted to provide forithe insertion of the fastening elements, :and it should :be :Such as topermit the packing elements 20, 21 to be forced apart, if necessary, bymeans of a reamer or other suitable tool, so as to spread themsufficiently to enable the fastening elements to be passed between theinner edges of the packing elements without mutilating them; Arelatively light-weight cotton tape has been found to give satisfactoryresults when used as a connecting strip.

The packing elements 20, 21 may be made of rubber composition, or offabric, or of fabric saturatedor coated with rubber composition, or ofany other suitable packing material. Preferably these strips willcomprise ber cement or rubber composltion'.

The parts 20,21 and 22 may be secured together by the use of rubbercement or rub ber composition, which may .be subsequently vulcanized,and, if desired, they may be further secured by stftching.

In the form of the invention represented in cross-section in Fig. 3 thefolds of the packing elements are secured together and to the connectingstrip 'bytwo lines of stitching 29 through each of'the packing elements.In the form of gasket, illustrated in Fig. 7 the parts aresecuredtogether by means of a single line of stitching 30 located just withineach of the margins of the packing elements 20, 21, the distance fromthemargin being Sufiicient to cause the I stitching to pass through thefour layers of packing material and through the layer of connecting.material. In the form'of packing illustrated in Fig. 8 the foldedmargins of the packing elements 20,21 are represented'as being stitchedtogether as-at 31, but the stitching of this form does not pass throughthe connecting 4'0 element 22. i

J In-Fig. 9 is disclosed a modified form of gasket in which each of thepacking elements 20", 21 comprises av ribbon of material folded once atits center and having its edge por- 46 tions 28 exposed along the centerzone of the gasket.

By varying the number of folds of the packing strips, sealing elementsof anyv desired thickness may be built up irrespective 501 of thethickness of the material from which they are made.

' In Fig. 10 the invention is illustrated as applied to a gasket adaptedfor the sealing of relatively wide joints and in which provi-= sion ismade for the use of two rows of fastening elements located at oppositesides of the centerof thegasket. This gasket material comprises threepacking elements 32, 33, 34 and two connectingstrips 35, 36.

: If the material of which the packing elements are made is not tooheavy, the packing elements 20", 21 and the connecting strip 22" maycomprise a single folded strip of fabric, as indicated in Fig. 11.

It will be understood that any of the via asbestos fabric saturated, orcoated with rubrious forms of packing represented in Figs. 3, 4 and 7 to11, inclusive, may have their parts secured together either by theuse ofrubber cement alone, or by stitching alone, or by incorporating rubbercomposition with the fabric material and then vulcanizing, or by the useof stitching in addition to the use of rubber cement or rubbercomposition.

The above-described gasket material may be cut into strips of suitablelength and formed into rings of any desired size for use as gaskets forhand-hole plates, manhole plates, pipe joints, or other analogousdevices having joints to be sealed. As indicated .in Figs. 1, 2 and 3,the material is illustrated as being used to seal the joint at theperiphcry of the cover of a locomotive smoke-box.

In this application of the gasket material the gasket ring 37 is clampedbetween the margin of the cover 38 and the front wall 39 of thesmoke-box: When the ring is ready for application to the joint, theslits 23 (Fig. 5)

other suitable instrument, after which the screws may be inserted in thecover and thrust through the slitted portions of the gasket ring, whichmay then be secured in place by tightly drawingv up the screws inthreaded openings provided therefor in the part of the smoke-boxsurrounding the opening to be closed by the cover.

Theme of layers of packing material in side-by-side arrangementconnected by means of a relatively thin strip or web which may bereadily slit or separated at any point to provide for the insertion'ofthe fastening elements avoids all necessity for any careful spacing ofopenings for the fastening elements and the annoyance which results whensuch spacing of the openings does not conform with the spacing of thefastening elements.

The invention is not intended to be limited to the forms hereindisclosed for purposes of illustration, but should be regarded asincluding modifications and variations thereof within the scope of theappended claims.

What is claimed is: i

1. A asket comprising packing elements of folded fibrous materialdisposed in sideby-side relationship and intervening connecting materialhaving portions extended between the folds of the packing elements, theconnecting material being of a nature such as to permit fasteningelements to be readily passed between the desired points.

2. A gasket, as defined by'claim 1, of which the packing strips compriseribbonsof fibrous material folded along their centers and packingelements at any having their margins folded in, the folded margins ofthe two strips being adjacent, and of which the connecting mediumcomprises a ribbon having its marginal portions extended in and securedbetween the folded margins of the ribbons of packing material.

3. A gasket, as defined by claim 1, of which the connecting medium iscotton tape. i In witness whereof, we have hereunto signed ournames.

CECHJ R. HUBBARD. ROBERT M. WAPLES.

